[单选题]
What length of copper:3h3n3d44fy4 sgqmq iq v+ jgj xvv6gk0e;7u r wiahgvpy5)w 1q0 ,vt rtl4hi5) bxl:gb*re (resistivity $1.68 \times 10^{-8} \; \Omega \cdot m$) of diameter 0.15 mm is needed for a total resistance of $15 \; \Omega$?
A. $16 \; mm$
B. $16 \; cm$
C. $1.6 \; m$
D. $16 \; m$
